#define ACPI_SYSTEM_CLASS "system"
#define ACPI_SYSTEM_DEVICE_NAME "System"
-u32 acpi_irq_handled;
-u32 acpi_irq_not_handled;
-
-/*
- * Make ACPICA version work as module param
- */
-static int param_get_acpica_version(char *buffer, struct kernel_param *kp)
-{
- int result;
-
- result = sprintf(buffer, "%x", ACPI_CA_VERSION);
-
- return result;
-}
-
-module_param_call(acpica_version, NULL, param_get_acpica_version, NULL, 0444);
-
-/* --------------------------------------------------------------------------
- FS Interface (/sys)
- -------------------------------------------------------------------------- */
-static LIST_HEAD(acpi_table_attr_list);
-static struct kobject *tables_kobj;
-static struct kobject *dynamic_tables_kobj;
-
-struct acpi_table_attr {
- struct bin_attribute attr;
- char name[8];
- int instance;
- struct list_head node;
-};
-
-static ssize_t acpi_table_show(struct file *filp, struct kobject *kobj,
- struct bin_attribute *bin_attr, char *buf,
- loff_t offset, size_t count)
-{
- struct acpi_table_attr *table_attr =
- container_of(bin_attr, struct acpi_table_attr, attr);
- struct acpi_table_header *table_header = NULL;
- acpi_status status;
- char name[ACPI_NAME_SIZE];
-
- if (strncmp(table_attr->name, "NULL", 4))
- memcpy(name, table_attr->name, ACPI_NAME_SIZE);
- else
- memcpy(name, "\0\0\0\0", 4);
-
- status =
- acpi_get_table(name, table_attr->instance,
- &table_header);
- if (ACPI_FAILURE(status))
- return -ENODEV;
-
- return memory_read_from_buffer(buf, count, &offset,
- table_header, table_header->length);
-}
-
-static void acpi_table_attr_init(struct acpi_table_attr *table_attr,
- struct acpi_table_header *table_header)
-{
- struct acpi_table_header *header = NULL;
- struct acpi_table_attr *attr = NULL;
-
- sysfs_attr_init(&table_attr->attr.attr);
- if (table_header->signature[0] != '\0')
- memcpy(table_attr->name, table_header->signature,
- ACPI_NAME_SIZE);
- else
- memcpy(table_attr->name, "NULL", 4);
-
- list_for_each_entry(attr, &acpi_table_attr_list, node) {
- if (!memcmp(table_attr->name, attr->name, ACPI_NAME_SIZE))
- if (table_attr->instance < attr->instance)
- table_attr->instance = attr->instance;
- }
- table_attr->instance++;
-
- if (table_attr->instance > 1 || (table_attr->instance == 1 &&
- !acpi_get_table
- (table_header->signature, 2, &header)))
- sprintf(table_attr->name + ACPI_NAME_SIZE, "%d",
- table_attr->instance);
-
- table_attr->attr.size = 0;
- table_attr->attr.read = acpi_table_show;
- table_attr->attr.attr.name = table_attr->name;
- table_attr->attr.attr.mode = 0400;
-
- return;
-}
-
-static acpi_status
-acpi_sysfs_table_handler(u32 event, void *table, void *context)
-{
- struct acpi_table_attr *table_attr;
-
- switch (event) {
- case ACPI_TABLE_EVENT_LOAD:
- table_attr =
- kzalloc(sizeof(struct acpi_table_attr), GFP_KERNEL);
- if (!table_attr)
- return AE_NO_MEMORY;
-
- acpi_table_attr_init(table_attr, table);
- if (sysfs_create_bin_file(dynamic_tables_kobj,
- &table_attr->attr)) {
- kfree(table_attr);
- return AE_ERROR;
- } else
- list_add_tail(&table_attr->node,
- &acpi_table_attr_list);
- break;
- case ACPI_TABLE_EVENT_UNLOAD:
- /*
- * we do not need to do anything right now
- * because the table is not deleted from the
- * global table list when unloading it.
- */
- break;
- default:
- return AE_BAD_PARAMETER;
- }
- return AE_OK;
-}
-
-static int acpi_system_sysfs_init(void)
-{
- struct acpi_table_attr *table_attr;
- struct acpi_table_header *table_header = NULL;
- int table_index = 0;
- int result;
-
- tables_kobj = kobject_create_and_add("tables", acpi_kobj);
- if (!tables_kobj)
- goto err;
-
- dynamic_tables_kobj = kobject_create_and_add("dynamic", tables_kobj);
- if (!dynamic_tables_kobj)
- goto err_dynamic_tables;
-
- do {
- result = acpi_get_table_by_index(table_index, &table_header);
- if (!result) {
- table_index++;
- table_attr = NULL;
- table_attr =
- kzalloc(sizeof(struct acpi_table_attr), GFP_KERNEL);
- if (!table_attr)
- return -ENOMEM;
-
- acpi_table_attr_init(table_attr, table_header);
- result =
- sysfs_create_bin_file(tables_kobj,
- &table_attr->attr);
- if (result) {
- kfree(table_attr);
- return result;
- } else
- list_add_tail(&table_attr->node,
- &acpi_table_attr_list);
- }
- } while (!result);
- kobject_uevent(tables_kobj, KOBJ_ADD);
- kobject_uevent(dynamic_tables_kobj, KOBJ_ADD);
- result = acpi_install_table_handler(acpi_sysfs_table_handler, NULL);
-
- return result == AE_OK ? 0 : -EINVAL;
-err_dynamic_tables:
- kobject_put(tables_kobj);
-err:
- return -ENOMEM;
-}
-
-/*
- * Detailed ACPI IRQ counters in /sys/firmware/acpi/interrupts/
- * See Documentation/ABI/testing/sysfs-firmware-acpi
- */
-
-#define COUNT_GPE 0
-#define COUNT_SCI 1 /* acpi_irq_handled */
-#define COUNT_SCI_NOT 2 /* acpi_irq_not_handled */
-#define COUNT_ERROR 3 /* other */
-#define NUM_COUNTERS_EXTRA 4
-
-struct event_counter {
- u32 count;
- u32 flags;
-};
-
-static struct event_counter *all_counters;
-static u32 num_gpes;
-static u32 num_counters;
-static struct attribute **all_attrs;
-static u32 acpi_gpe_count;
-
-static struct attribute_group interrupt_stats_attr_group = {
- .name = "interrupts",
-};
-static struct kobj_attribute *counter_attrs;
-
-static void delete_gpe_attr_array(void)
-{
- struct event_counter *tmp = all_counters;
-
- all_counters = NULL;
- kfree(tmp);
-
- if (counter_attrs) {
- int i;
-
- for (i = 0; i < num_gpes; i++)
- kfree(counter_attrs[i].attr.name);
-
- kfree(counter_attrs);
- }
- kfree(all_attrs);
-
- return;
-}
-
-void acpi_os_gpe_count(u32 gpe_number)
-{
- acpi_gpe_count++;
-
- if (!all_counters)
- return;
-
- if (gpe_number < num_gpes)
- all_counters[gpe_number].count++;
- else
- all_counters[num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_ERROR].
- count++;
-
- return;
-}
-
-void acpi_os_fixed_event_count(u32 event_number)
-{
- if (!all_counters)
- return;
-
- if (event_number < ACPI_NUM_FIXED_EVENTS)
- all_counters[num_gpes + event_number].count++;
- else
- all_counters[num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_ERROR].
- count++;
-
- return;
-}
-
-static int get_status(u32 index, acpi_event_status *status, acpi_handle *handle)
-{
- int result = 0;
-
- if (index >= num_gpes + ACPI_NUM_FIXED_EVENTS)
- goto end;
-
- if (index < num_gpes) {
- result = acpi_get_gpe_device(index, handle);
- if (result) {
- ACPI_EXCEPTION((AE_INFO, AE_NOT_FOUND,
- "Invalid GPE 0x%x\n", index));
- goto end;
- }
- result = acpi_get_gpe_status(*handle, index, status);
- } else if (index < (num_gpes + ACPI_NUM_FIXED_EVENTS))
- result = acpi_get_event_status(index - num_gpes, status);
-
-end:
- return result;
-}
-
-static ssize_t counter_show(struct kobject *kobj,
- struct kobj_attribute *attr, char *buf)
-{
- int index = attr - counter_attrs;
- int size;
- acpi_handle handle;
- acpi_event_status status;
- int result = 0;
-
- all_counters[num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_SCI].count =
- acpi_irq_handled;
- all_counters[num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_SCI_NOT].count =
- acpi_irq_not_handled;
- all_counters[num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_GPE].count =
- acpi_gpe_count;
-
- size = sprintf(buf, "%8d", all_counters[index].count);
-
- /* "gpe_all" or "sci" */
- if (index >= num_gpes + ACPI_NUM_FIXED_EVENTS)
- goto end;
-
- result = get_status(index, &status, &handle);
- if (result)
- goto end;
-
- if (!(status & ACPI_EVENT_FLAG_HANDLE))
- size += sprintf(buf + size, " invalid");
- else if (status & ACPI_EVENT_FLAG_ENABLED)
- size += sprintf(buf + size, " enabled");
- else if (status & ACPI_EVENT_FLAG_WAKE_ENABLED)
- size += sprintf(buf + size, " wake_enabled");
- else
- size += sprintf(buf + size, " disabled");
-
-end:
- size += sprintf(buf + size, "\n");
- return result ? result : size;
-}
-
-/*
- * counter_set() sets the specified counter.
- * setting the total "sci" file to any value clears all counters.
- * enable/disable/clear a gpe/fixed event in user space.
- */
-static ssize_t counter_set(struct kobject *kobj,
- struct kobj_attribute *attr, const char *buf, size_t size)
-{
- int index = attr - counter_attrs;
- acpi_event_status status;
- acpi_handle handle;
- int result = 0;
-
- if (index == num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_SCI) {
- int i;
- for (i = 0; i < num_counters; ++i)
- all_counters[i].count = 0;
- acpi_gpe_count = 0;
- acpi_irq_handled = 0;
- acpi_irq_not_handled = 0;
- goto end;
- }
-
- /* show the event status for both GPEs and Fixed Events */
- result = get_status(index, &status, &handle);
- if (result)
- goto end;
-
- if (!(status & ACPI_EVENT_FLAG_HANDLE)) {
- printk(KERN_WARNING PREFIX
- "Can not change Invalid GPE/Fixed Event status\n");
- return -EINVAL;
- }
-
- if (index < num_gpes) {
- if (!strcmp(buf, "disable\n") &&
- (status & ACPI_EVENT_FLAG_ENABLED))
- result = acpi_disable_gpe(handle, index);
- else if (!strcmp(buf, "enable\n") &&
- !(status & ACPI_EVENT_FLAG_ENABLED))
- result = acpi_enable_gpe(handle, index);
- else if (!strcmp(buf, "clear\n") &&
- (status & ACPI_EVENT_FLAG_SET))
- result = acpi_clear_gpe(handle, index);
- else
- all_counters[index].count = strtoul(buf, NULL, 0);
- } else if (index < num_gpes + ACPI_NUM_FIXED_EVENTS) {
- int event = index - num_gpes;
- if (!strcmp(buf, "disable\n") &&
- (status & ACPI_EVENT_FLAG_ENABLED))
- result = acpi_disable_event(event, ACPI_NOT_ISR);
- else if (!strcmp(buf, "enable\n") &&
- !(status & ACPI_EVENT_FLAG_ENABLED))
- result = acpi_enable_event(event, ACPI_NOT_ISR);
- else if (!strcmp(buf, "clear\n") &&
- (status & ACPI_EVENT_FLAG_SET))
- result = acpi_clear_event(event);
- else
- all_counters[index].count = strtoul(buf, NULL, 0);
- } else
- all_counters[index].count = strtoul(buf, NULL, 0);
-
- if (ACPI_FAILURE(result))
- result = -EINVAL;
-end:
- return result ? result : size;
-}
-
-void acpi_irq_stats_init(void)
-{
- int i;
-
- if (all_counters)
- return;
-
- num_gpes = acpi_current_gpe_count;
- num_counters = num_gpes + ACPI_NUM_FIXED_EVENTS + NUM_COUNTERS_EXTRA;
-
- all_attrs = kzalloc(sizeof(struct attribute *) * (num_counters + 1),
- GFP_KERNEL);
- if (all_attrs == NULL)
- return;
-
- all_counters = kzalloc(sizeof(struct event_counter) * (num_counters),
- GFP_KERNEL);
- if (all_counters == NULL)
- goto fail;
-
- counter_attrs = kzalloc(sizeof(struct kobj_attribute) * (num_counters),
- GFP_KERNEL);
- if (counter_attrs == NULL)
- goto fail;
-
- for (i = 0; i < num_counters; ++i) {
- char buffer[12];
- char *name;
-
- if (i < num_gpes)
- sprintf(buffer, "gpe%02X", i);
- else if (i == num_gpes + ACPI_EVENT_PMTIMER)
- sprintf(buffer, "ff_pmtimer");
- else if (i == num_gpes + ACPI_EVENT_GLOBAL)
- sprintf(buffer, "ff_gbl_lock");
- else if (i == num_gpes + ACPI_EVENT_POWER_BUTTON)
- sprintf(buffer, "ff_pwr_btn");
- else if (i == num_gpes + ACPI_EVENT_SLEEP_BUTTON)
- sprintf(buffer, "ff_slp_btn");
- else if (i == num_gpes + ACPI_EVENT_RTC)
- sprintf(buffer, "ff_rt_clk");
- else if (i == num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_GPE)
- sprintf(buffer, "gpe_all");
- else if (i == num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_SCI)
- sprintf(buffer, "sci");
- else if (i == num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_SCI_NOT)
- sprintf(buffer, "sci_not");
- else if (i == num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_ERROR)
- sprintf(buffer, "error");
- else
- sprintf(buffer, "bug%02X", i);
-
- name = kzalloc(strlen(buffer) + 1, GFP_KERNEL);
- if (name == NULL)
- goto fail;
- strncpy(name, buffer, strlen(buffer) + 1);
-
- sysfs_attr_init(&counter_attrs[i].attr);
- counter_attrs[i].attr.name = name;
- counter_attrs[i].attr.mode = 0644;
- counter_attrs[i].show = counter_show;
- counter_attrs[i].store = counter_set;
-
- all_attrs[i] = &counter_attrs[i].attr;
- }
-
- interrupt_stats_attr_group.attrs = all_attrs;
- if (!sysfs_create_group(acpi_kobj, &interrupt_stats_attr_group))
- return;
-
-fail:
- delete_gpe_attr_array();
- return;
-}
-
-static void __exit interrupt_stats_exit(void)
-{
- sysfs_remove_group(acpi_kobj, &interrupt_stats_attr_group);
-
- delete_gpe_attr_array();
-
- return;
-}
-
/* --------------------------------------------------------------------------
FS Interface (/proc)
-------------------------------------------------------------------------- */
int result;
result = acpi_system_procfs_init();
- if (result)
- return result;
-
- result = acpi_system_sysfs_init();
return result;
}
projects / linux-2.6-microblaze.git / blobdiff